Hair dryer

ABSTRACT

Provided is a hair dryer, including a housing, a wind module, a control key and a heating module. The housing has a handle, an air duct and an annular flow-guide chamber. One side of the handle forms an air inlet, one side of the air duct forms an air outlet, and the center of the annular flow-guide chamber forms a perforation. The annular flow-guide communicates with the handle and the air duct, and the angle between the handle and the air duct is not more than 180 degrees. The wind module is disposed in the handle and includes a motor, a fan, a control circuit and an electric power unit, mutually connected. The control key is disposed on the surface of the handle and connected to the control circuit. The heating module is disposed in the air duct and connected to the control circuit and the electric power unit.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority of Taiwanese patent application No. 109203416, filed on Mar. 25, 2020, which is incorporated herewith by reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates generally to a hair dryer, and more particularly, to a hair dryer for blowing and styling hair.

2. The Prior Arts

The available hair dryer for blowing and styling hair includes a housing with an air inlet and an air outlet, a handle connected to the housing, a motor, a fan, a heater installed in the housing, and a control circuit installed in the handle. The air inlet and air outlet are located on the two axial sides of the housing. The fan and heater are located between the air inlet and the air outlet. The motor drives the fan to draw air into the housing through the air inlet. The air passes through the heater and becomes hot airflow, which is blown out from the air outlet for drying or styling the hair.

In the known hair dryer, the air inlet, fan, heater, and air outlet are roughly arranged along the axial direction of the housing. Part of the air passing through the heater is obstructed to form a turbulent flow. The turbulent flow hits the fan and the housing to generate noise as well as increase the power consumption of the motor. The noise make users uncomfortable, especially for hairdressers, as long-term noise environment may affect hearing. Therefore, improving the various problems of the known hair dryer is the objective of the present invention.

SUMMARY OF THE INVENTION

A primary objective of the present invention is to provide a hair dryer, comprising: a housing, a wind module, a control key, and a heating module; wherein the housing has a handle, an air duct and an annular flow-guide chamber; one side of the handle forms an air inlet, one side of the air duct forms an air outlet, and the center of the annular flow-guide chamber forms a perforation; the annular flow-guide chamber communicates with the handle and the air duct respectively and the angle between the handle and the air duct is not more than 180 degrees; the wind module is disposed in the handle and comprises a motor, a fan, a control circuit and an electric power unit mutually connected; the control key is disposed on the surface of the handle and connected to the control circuit; the heating module is disposed in the air duct and connected to the control circuit and the electric power unit.

In an embodiment of the present invention, the cross-section of the perforation along the air flow direction is circular, elliptical or water drop shaped.

In an embodiment of the present invention, the angle between the handle and the air duct is 90 or 180 degrees.

In an embodiment of the present invention, the electric power unit may be connected to an external power source.

In an embodiment of the present invention, the hair dryer further comprises a wind deflector, detachably connected to the air outlet.

The hair dryer of the present invention includes a housing, a wind module, a control key, and a heating module. The housing has a handle, an air duct, and an annular flow-guide chamber. One side of the handle forms an air inlet, and one side of the air duct form an air outlet, and a perforation is formed at the center of the annular flow-guide chamber. The annular flow-guide chamber is respectively connected with the handle and the air duct. The angle between the handle and the air duct is not more than 180 degrees. With the design of the annular flow-guide chamber and the perforation, the present invention can greatly reduce the noise and power consumption of the hair dryer, and improve the convenience of storing and using the hair dryer.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:

FIG. 1 is an axial cross-sectional view illustrating the hair dryer according to an embodiment of the present invention; and

FIG. 2 is an axial cross-sectional view illustrating the hair dryer according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Referring to FIG. 1, FIG. 1 is an axial cross-sectional view of a hair dryer according to an embodiment of the present invention. As shown in FIG. 1, the hair dryer 1 includes a housing 10, a wind module 11, a control key 12 and a heating module 13. The housing 10 has a handle 101, an air duct 102, and an annular flow-guide chamber 103. One side of the handle 101 forms an air inlet 1011, one side of the air duct 102 forms an air outlet 1021, and the center of the annular flow-guide chamber 103 forms a perforation 104. The annular flow-guide chamber 103 respectively communicate with the handle 101 and the air duct 102, and the angle between the handle 101 and the air duct 102 is not greater than 180 degrees. The wind module 11 is disposed in the handle 101 and includes a motor, a fan, a control circuit, and an electric power unit (not shown) connected to one another. The control key 12 is disposed on the surface of the handle 101 and connected to the control circuit. The heating module 13 is disposed in the air duct 102 and connected to the control circuit and the electric power unit.

The housing 10 can be molded into two symmetrical half-shells using polymer materials, such as polycarbonate. The motor, fan, control circuit, electric power unit, such as rechargeable battery or wire connected to an external power supply with components such as the rectifier, and the heating module 13, such as electric heating coil, can be selected from known commercially available products. The present invention is not limited to any specific materials and components. The wind module 11, the control key 12, and the heating module 13 are mounted in the slot (not shown) corresponding to each component in one of the half-shell, and the other half-shell is buckled with the half-shell with mounted component. Screws and other fixing parts are used to lock the two half-shells to complete the assembly of the hair dryer 1.

The air inlet 1011, which may be grid-shaped, formed on the side of the handle 101 has the function of filtering hair and dust. The user presses the control key 12 to activate the wind module 11 and the heating module 13, and the wind module 11 sucks the air from the air inlet 1011 flowing into the annular flow-guide chamber 103 along the inside of the handle 101. The annular flow-guide chamber 103 does not communicate with the perforation 104, and the cross-section of the perforation 104 along the air flow direction, i.e., axial direction, is circular, elliptical or water drop shaped. The air flow is divided into an upper flow and a lower flow by the annular flow-guide chamber 103 and then merged into the air duct 102. The confluent air flow passes through the heating unit 13 and is ejected from the air outlet 1021.

With the air flow division and buffer design of the annular flow-guide chamber 103, the backflow generated by the air passing through the heating module 13 will not impact the fan or the motor, and therefore, the noise and power consumption of the hair dryer 1 can be greatly reduced. The perforation 104 located in the center of the annular diversion chamber 103 can be used for hanging the hair dryer 1 on a hook, which is convenient for household users or hairdressers to carry, and improves the convenience of storing and using the hair dryer 1.

In the present embodiment, the hair dryer 1 further includes a wind deflector 14 and a safety net 15. The wind deflector 14 is detachably connected to the air outlet 1021, and the safety net 15 is disposed between the air outlet 1021 and the wind deflector 14. The angle between the handle 101 and the air duct 102 is 90 degrees, the water drop-shaped perforation 104 and the tapered wind deflector 14 can increase the air flow rate, and the safety net 15 can prevent the user from touching the heating unit 13 accidentally.

FIG. 2 is an axial cross-sectional view of a hair dryer according to another embodiment of the present invention. As shown in FIG. 2, the hair dryer 2 includes a housing 20, a wind module 11, a control key 12, a heating module 13 and a wind deflector 24. The housing 20 has a handle 201, an air duct 202, and an annular flow-guide chamber 203. One side of the handle 201 forms an air inlet 2011, one side of the air duct 202 forms an air outlet 2021, and the center of the annular flow-guide chamber 203 forms a perforation 204. The annular flow-guide chamber 203 respectively communicates with the handle 201 and the air duct 202, and the wind deflector 24 is detachably connected to the air outlet 2021.

In the present embodiment, the axial cross-section of the perforation 204 located in the center of the annular flow-guide chamber 203 is circular, the angle between the handle 201 and the air duct 202 is 180 degrees, and the cylindrical wind deflector 24 comprises air vents 241 and comb teeth 242 disposed at intervals. With the design of the air vent 241 and the comb teeth 242, the hair dryer 2 can provide both the functions of drying and styling hair.

In summary, in the hair dryer of the present invention, the features include the air flow division and buffer design of the annular flow-guide chamber, the backflow generated by the heating module not impacting the fan or the motor, and the perforation located in the center of the annular diversion chamber for hanging on a hook, thereby solving existing problems of the known hair dryer, achieving the effect of reducing the noise and power consumption of the hair dryer and improving the convenience of storage and use of the hair dryer.

Although the present invention has been described with reference to the preferred embodiments thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims. 

What is claimed is:
 1. A hair dryer, comprising: a housing, having a handle an air duct and an annular flow-guide chamber; an air inlet formed on one side of the handle, an air outlet formed on one side of the air duct, and a perforation formed at center of the annular flow-guide chamber; the annular flow-guide chamber communicating with the handle and the air duct respectively and the angle between the handle and the air duct not more than 180 degrees; a wind module, disposed inside the handle, comprising: a motor, a fan, a control circuit and an electric power unit, mutually connected; a control key, disposed on surface of the handle and connected to the control circuit; and a heating module, disposed inside the air duct and connected to the control circuit and the electric power unit.
 2. The hair dryer according to claim 1, wherein the cross-section of the perforation along the air flow direction is circular, elliptical or water drop shaped.
 3. The hair dryer according to claim 1, wherein the angle between the handle and the air duct is 90 or 180 degrees.
 4. The hair dryer according to claim 1, wherein the electric power unit is connected to an external power source.
 5. The hair dryer according to claim 1, wherein the hair dryer further comprises a wind deflector, detachably connected to the air outlet. 